./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3268626757 <...> [ 97.349520][ T7] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.77' (ED25519) to the list of known hosts. execve("./syz-executor3268626757", ["./syz-executor3268626757"], 0x7ffe31726480 /* 10 vars */) = 0 brk(NULL) = 0x55558c887000 brk(0x55558c887d00) = 0x55558c887d00 arch_prctl(ARCH_SET_FS, 0x55558c887380) = 0 set_tid_address(0x55558c887650) = 5076 set_robust_list(0x55558c887660, 24) = 0 rseq(0x55558c887ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3268626757", 4096) = 28 getrandom("\xbc\x29\x9d\x88\x6b\x21\xd9\x67", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558c887d00 brk(0x55558c8a8d00) = 0x55558c8a8d00 brk(0x55558c8a9000) = 0x55558c8a9000 mprotect(0x7f4889207000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5077 attached , child_tidptr=0x55558c887650) = 5077 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] set_robust_list(0x55558c887660, 24) = 0 ./strace-static-x86_64: Process 5078 attached [pid 5077] mkdir("./syzkaller.6g0hSF", 0700 [pid 5078] set_robust_list(0x55558c887660, 24) = 0 [pid 5078] mkdir("./syzkaller.XnLSIl", 0700 [pid 5076] <... clone resumed>, child_tidptr=0x55558c887650) = 5078 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5079 attached [pid 5078] <... mkdir resumed>) = 0 [pid 5077] chmod("./syzkaller.6g0hSF", 0777 [pid 5078] chmod("./syzkaller.XnLSIl", 0777) = 0 [ 98.696116][ T28] audit: type=1400 audit(1714923888.639:87): avc: denied { execmem } for pid=5076 comm="syz-executor326" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 5078] chdir("./syzkaller.XnLSIl" [pid 5076] <... clone resumed>, child_tidptr=0x55558c887650) = 5079 [pid 5079] set_robust_list(0x55558c887660, 24 [pid 5077] <... chmod resumed>) = 0 [pid 5079] <... set_robust_list resumed>) = 0 [pid 5077] chdir("./syzkaller.6g0hSF" [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] <... chdir resumed>) = 0 [pid 5079] mkdir("./syzkaller.FUSDaG", 0700 [pid 5077] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 5080 attached [pid 5076] <... clone resumed>, child_tidptr=0x55558c887650) = 5080 [pid 5078] mkdir("./0", 0777 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5080] set_robust_list(0x55558c887660, 24 [pid 5077] mkdir("./0", 0777 [pid 5080] <... set_robust_list resumed>) = 0 [pid 5079] <... mkdir resumed>) = 0 [pid 5078] <... mkdir resumed>) = 0 [pid 5077] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5081 attached [pid 5080] mkdir("./syzkaller.qTAkAS", 0700 [pid 5079] chmod("./syzkaller.FUSDaG", 0777 [pid 5078] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5076] <... clone resumed>, child_tidptr=0x55558c887650) = 5081 [pid 5080] <... mkdir resumed>) = 0 [pid 5081] set_robust_list(0x55558c887660, 24 [pid 5080] chmod("./syzkaller.qTAkAS", 0777 [pid 5079] <... chmod resumed>) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5077] <... openat resumed>) = 3 [pid 5081] <... set_robust_list resumed>) = 0 [pid 5080] <... chmod resumed>) = 0 [pid 5079] chdir("./syzkaller.FUSDaG" [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5077] ioctl(3, LOOP_CLR_FD [pid 5081] mkdir("./syzkaller.FJkFid", 0700 [pid 5079] <... chdir resumed>) = 0 [pid 5078] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5077] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5080] chdir("./syzkaller.qTAkAS" [pid 5079] mkdir("./0", 0777 [pid 5080] <... chdir resumed>) = 0 [pid 5078] close(3 [pid 5080] mkdir("./0", 0777 [pid 5079] <... mkdir resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5080] <... mkdir resumed>) = 0 [pid 5081] <... mkdir resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [ 98.795276][ T28] audit: type=1400 audit(1714923888.739:88): avc: denied { read write } for pid=5078 comm="syz-executor326" name="loop1" dev="devtmpfs" ino=649 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 98.819909][ T28] audit: type=1400 audit(1714923888.749:89): avc: denied { open } for pid=5078 comm="syz-executor326" path="/dev/loop1" dev="devtmpfs" ino=649 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5077] close(3 [pid 5079] <... openat resumed>) = 3 [pid 5077] <... close resumed>) = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5081] chmod("./syzkaller.FJkFid", 0777 [pid 5080] <... openat resumed>) = 3 [pid 5081] <... chmod resumed>) = 0 ./strace-static-x86_64: Process 5082 attached [pid 5081] chdir("./syzkaller.FJkFid" [pid 5080] ioctl(3, LOOP_CLR_FD [pid 5079] ioctl(3, LOOP_CLR_FD [pid 5077] <... clone resumed>, child_tidptr=0x55558c887650) = 5083 ./strace-static-x86_64: Process 5083 attached [pid 5082] set_robust_list(0x55558c887660, 24 [pid 5080] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5079] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5078] <... clone resumed>, child_tidptr=0x55558c887650) = 5082 [pid 5083] set_robust_list(0x55558c887660, 24 [pid 5081] <... chdir resumed>) = 0 [pid 5080] close(3 [pid 5082] <... set_robust_list resumed>) = 0 [pid 5080] <... close resumed>) = 0 [pid 5079] close(3 [pid 5080] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5082] chdir("./0" [pid 5081] mkdir("./0", 0777 [pid 5079] <... close resumed>) = 0 [pid 5081] <... mkdir resumed>) = 0 [pid 5080] <... clone resumed>, child_tidptr=0x55558c887650) = 5084 ./strace-static-x86_64: Process 5084 attached [pid 5079] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5083] <... set_robust_list resumed>) = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5083] chdir("./0" [pid 5081] <... openat resumed>) = 3 [pid 5083] <... chdir resumed>) = 0 [pid 5084] set_robust_list(0x55558c887660, 24 [pid 5082] <... chdir resumed>) = 0 [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5083] setpgid(0, 0 [pid 5081] ioctl(3, LOOP_CLR_FD [pid 5083] <... setpgid resumed>) = 0 [pid 5081] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5081] close(3 [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] <... close resumed>) = 0 [pid 5081] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5084] <... set_robust_list resumed>) = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5083] write(3, "1000", 4 [pid 5082] <... prctl resumed>) = 0 [pid 5083] <... write resumed>) = 4 [pid 5081] <... clone resumed>, child_tidptr=0x55558c887650) = 5086 [pid 5079] <... clone resumed>, child_tidptr=0x55558c887650) = 5085 ./strace-static-x86_64: Process 5085 attached [pid 5084] chdir("./0" [pid 5082] setpgid(0, 0 [pid 5084] <... chdir resumed>) = 0 [pid 5082] <... setpgid resumed>) = 0 [pid 5085] set_robust_list(0x55558c887660, 24 [pid 5083] close(3 [pid 5085] <... set_robust_list resumed>) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5083] <... close resumed>) = 0 [pid 5084] <... prctl resumed>) = 0 [pid 5083] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 5086 attached [pid 5085] chdir("./0" [pid 5084] setpgid(0, 0 [pid 5082] <... openat resumed>) = 3 [pid 5083] <... symlink resumed>) = 0 [pid 5086] set_robust_list(0x55558c887660, 24 [pid 5084] <... setpgid resumed>) = 0 [pid 5082] write(3, "1000", 4 [pid 5083] memfd_create("syzkaller", 0 [pid 5086] <... set_robust_list resumed>) = 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] <... write resumed>) = 4 [pid 5083] <... memfd_create resumed>) = 3 [pid 5086] chdir("./0" [pid 5084] <... openat resumed>) = 3 [pid 5082] close(3 [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5086] <... chdir resumed>) = 0 [pid 5084] write(3, "1000", 4 [pid 5082] <... close resumed>) = 0 [pid 5083] <... mmap resumed>) = 0x7f4880c00000 [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5085] <... chdir resumed>) = 0 [pid 5084] <... write resumed>) = 4 [pid 5082] symlink("/dev/binderfs", "./binderfs" [pid 5086] <... prctl resumed>) = 0 [pid 5086] setpgid(0, 0) = 0 [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] <... symlink resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [ 98.849520][ T28] audit: type=1400 audit(1714923888.759:90): avc: denied { ioctl } for pid=5077 comm="syz-executor326" path="/dev/loop0" dev="devtmpfs" ino=648 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5084] close(3 [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] <... close resumed>) = 0 [pid 5082] memfd_create("syzkaller", 0 [pid 5085] <... prctl resumed>) = 0 [pid 5084] symlink("/dev/binderfs", "./binderfs" [pid 5085] setpgid(0, 0 [pid 5086] write(3, "1000", 4) = 4 [pid 5086] close(3) = 0 [pid 5086] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5085] <... setpgid resumed>) = 0 [pid 5084] <... symlink resumed>) = 0 [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5086] memfd_create("syzkaller", 0 [pid 5085] <... openat resumed>) = 3 [pid 5082] <... memfd_create resumed>) = 3 [pid 5086] <... memfd_create resumed>) = 3 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5085] write(3, "1000", 4 [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5086] <... mmap resumed>) = 0x7f4880c00000 [pid 5085] <... write resumed>) = 4 [pid 5085] close(3 [pid 5082] <... mmap resumed>) = 0x7f4880c00000 [pid 5085] <... close resumed>) = 0 [pid 5084] memfd_create("syzkaller", 0 [pid 5085] symlink("/dev/binderfs", "./binderfs" [pid 5084] <... memfd_create resumed>) = 3 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5085] <... symlink resumed>) = 0 [pid 5084] <... mmap resumed>) = 0x7f4880c00000 [pid 5085] memfd_create("syzkaller", 0) = 3 [pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5085] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5082] <... write resumed>) = 16777216 [pid 5082] munmap(0x7f4880c00000, 138412032) = 0 [pid 5082] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5082] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5082] close(3) = 0 [pid 5082] close(4) = 0 [ 100.078096][ T5082] loop1: detected capacity change from 0 to 32768 [pid 5082] mkdir("./file0", 0777) = 0 [pid 5085] <... write resumed>) = 16777216 [pid 5082] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [ 100.160685][ T28] audit: type=1400 audit(1714923890.109:91): avc: denied { mounton } for pid=5082 comm="syz-executor326" path="/root/syzkaller.XnLSIl/0/file0" dev="sda1" ino=1942 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 5085] munmap(0x7f4880c00000, 138412032 [pid 5086] <... write resumed>) = 16777216 [pid 5086] munmap(0x7f4880c00000, 138412032 [pid 5082] <... mount resumed>) = 0 [pid 5082] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5085] <... munmap resumed>) = 0 [pid 5082] <... openat resumed>) = 3 [pid 5082] chdir("./file0") = 0 [pid 5085] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5082] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5082] exit_group(0) = ? [pid 5082] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=42 /* 0.42 s */} --- [pid 5078] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5078] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5085] <... openat resumed>) = 4 [ 100.253552][ T28] audit: type=1400 audit(1714923890.179:92): avc: denied { mount } for pid=5082 comm="syz-executor326" name="/" dev="loop1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [pid 5085] ioctl(4, LOOP_SET_FD, 3 [pid 5078] <... openat resumed>) = 3 [pid 5078] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] getdents64(3, 0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5078] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5085] <... ioctl resumed>) = 0 [pid 5078] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] unlink("./0/binderfs" [pid 5086] <... munmap resumed>) = 0 [pid 5085] close(3 [pid 5078] <... unlink resumed>) = 0 [pid 5078] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5085] <... close resumed>) = 0 [pid 5084] <... write resumed>) = 16777216 [pid 5086] <... openat resumed>) = 4 [pid 5085] close(4 [pid 5083] <... write resumed>) = 16777216 [pid 5086] ioctl(4, LOOP_SET_FD, 3 [pid 5085] <... close resumed>) = 0 [pid 5084] munmap(0x7f4880c00000, 138412032 [pid 5083] munmap(0x7f4880c00000, 138412032 [pid 5085] mkdir("./file0", 0777 [pid 5086] <... ioctl resumed>) = 0 [pid 5085] <... mkdir resumed>) = 0 [pid 5085] mount("/dev/loop2", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5086] close(3 [pid 5078] <... umount2 resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5085] <... mount resumed>) = 0 [ 100.308994][ T5085] loop2: detected capacity change from 0 to 32768 [ 100.323015][ T28] audit: type=1400 audit(1714923890.269:93): avc: denied { unmount } for pid=5078 comm="syz-executor326" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 100.347115][ T5086] loop4: detected capacity change from 0 to 32768 [pid 5086] close(4 [pid 5085] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5086] <... close resumed>) = 0 [pid 5085] <... openat resumed>) = 3 [pid 5086] mkdir("./file0", 0777 [pid 5085] chdir("./file0" [pid 5078] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5085] <... chdir resumed>) = 0 [pid 5086] <... mkdir resumed>) = 0 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5085] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5085] exit_group(0 [pid 5086] mount("/dev/loop4", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5085] <... exit_group resumed>) = ? [pid 5078] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5084] <... munmap resumed>) = 0 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5085] +++ exited with 0 +++ [pid 5084] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5083] <... munmap resumed>) = 0 [pid 5078] <... openat resumed>) = 4 [pid 5084] <... openat resumed>) = 4 [pid 5079] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=40 /* 0.40 s */} --- [pid 5078] newfstatat(4, "", [pid 5084] ioctl(4, LOOP_SET_FD, 3 [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] getdents64(4, [pid 5079] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] <... getdents64 resumed>0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5078] getdents64(4, [pid 5079] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5079] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5079] getdents64(3, [pid 5083] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5079] <... getdents64 resumed>0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5078] <... getdents64 resumed>0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5086] <... mount resumed>) = 0 [pid 5083] <... openat resumed>) = 4 [pid 5079] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5084] <... ioctl resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5084] close(3 [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] close(4 [pid 5086] chdir("./file0" [pid 5084] <... close resumed>) = 0 [pid 5083] ioctl(4, LOOP_SET_FD, 3 [pid 5079] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5078] <... close resumed>) = 0 [pid 5086] <... chdir resumed>) = 0 [pid 5084] close(4 [pid 5079] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] rmdir("./0/file0" [pid 5086] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5084] <... close resumed>) = 0 [pid 5086] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5084] mkdir("./file0", 0777 [pid 5078] <... rmdir resumed>) = 0 [pid 5086] exit_group(0 [pid 5079] unlink("./0/binderfs" [pid 5086] <... exit_group resumed>) = ? [pid 5084] <... mkdir resumed>) = 0 [pid 5079] <... unlink resumed>) = 0 [pid 5079] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5084] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5083] <... ioctl resumed>) = 0 [pid 5086] +++ exited with 0 +++ [pid 5079] <... umount2 resumed>) = 0 [pid 5078] getdents64(3, [pid 5081] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=38 /* 0.38 s */} --- [pid 5079] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5083] close(3 [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5083] <... close resumed>) = 0 [pid 5079] newfstatat(AT_FDCWD, "./0/file0", [pid 5078] <... getdents64 resumed>0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5083] close(4 [pid 5081] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5079] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] close(3 [pid 5083] <... close resumed>) = 0 [pid 5081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5079] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5078] <... close resumed>) = 0 [pid 5083] mkdir("./file0", 0777 [pid 5081] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 100.437250][ T5084] loop3: detected capacity change from 0 to 32768 [ 100.455590][ T5083] loop0: detected capacity change from 0 to 32768 [pid 5078] rmdir("./0" [pid 5083] <... mkdir resumed>) = 0 [pid 5081] <... openat resumed>) = 3 [pid 5079] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5081] newfstatat(3, "", [pid 5079] <... openat resumed>) = 4 [pid 5078] <... rmdir resumed>) = 0 [pid 5084] <... mount resumed>) = 0 [pid 5081] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5079] newfstatat(4, "", [pid 5081] getdents64(3, [pid 5083] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5081] <... getdents64 resumed>0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5079] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5081] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5079] getdents64(4, [pid 5081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5079] <... getdents64 resumed>0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5081] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5079] getdents64(4, [pid 5078] mkdir("./1", 0777 [pid 5084] <... openat resumed>) = 3 [pid 5081] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5079] <... getdents64 resumed>0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5084] chdir("./file0" [pid 5081] unlink("./0/binderfs" [pid 5084] <... chdir resumed>) = 0 [pid 5081] <... unlink resumed>) = 0 [pid 5079] close(4 [pid 5084] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5079] <... close resumed>) = 0 [pid 5078] <... mkdir resumed>) = 0 [pid 5084] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5083] <... mount resumed>) = 0 [pid 5081] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5079] rmdir("./0/file0" [pid 5084] exit_group(0) = ? [pid 5079] <... rmdir resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5083] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5084] +++ exited with 0 +++ [pid 5083] chdir("./file0") = 0 [pid 5079] getdents64(3, [pid 5083] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5080] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=9 /* 0.09 s */, si_stime=45 /* 0.45 s */} --- [pid 5083] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5080] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5079] <... getdents64 resumed>0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5081] <... umount2 resumed>) = 0 [pid 5080] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5079] close(3 [pid 5083] exit_group(0 [pid 5079] <... close resumed>) = 0 [pid 5080] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5083] <... exit_group resumed>) = ? [pid 5081] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5080] <... openat resumed>) = 3 [pid 5079] rmdir("./0" [pid 5081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5079] <... rmdir resumed>) = 0 [pid 5080] newfstatat(3, "", [pid 5081] newfstatat(AT_FDCWD, "./0/file0", [pid 5080] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5081] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5081] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5080] getdents64(3, [pid 5079] mkdir("./1", 0777 [pid 5083] +++ exited with 0 +++ [pid 5080] <... getdents64 resumed>0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5079] <... mkdir resumed>) = 0 [pid 5081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5080] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5081] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5080] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=44 /* 0.44 s */} --- [pid 5080] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5081] <... openat resumed>) = 4 [pid 5080] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5081] newfstatat(4, "", [pid 5080] unlink("./0/binderfs" [pid 5079] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5077] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5081] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5080] <... unlink resumed>) = 0 [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] getdents64(4, [pid 5079] <... openat resumed>) = 3 [pid 5077] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5081] <... getdents64 resumed>0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5077] <... openat resumed>) = 3 [pid 5081] getdents64(4, [pid 5080] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5079] ioctl(3, LOOP_CLR_FD [pid 5077] newfstatat(3, "", [pid 5081] <... getdents64 resumed>0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5081] close(4 [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5081] <... close resumed>) = 0 [pid 5077] getdents64(3, [pid 5081] rmdir("./0/file0") = 0 [pid 5077] <... getdents64 resumed>0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5077] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5081] getdents64(3, [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] <... getdents64 resumed>0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5077] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5081] close(3 [pid 5077] unlink("./0/binderfs" [pid 5081] <... close resumed>) = 0 [pid 5080] <... umount2 resumed>) = 0 [pid 5077] <... unlink resumed>) = 0 [pid 5080] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5081] rmdir("./0" [pid 5080] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] <... rmdir resumed>) = 0 [pid 5080] newfstatat(AT_FDCWD, "./0/file0", [pid 5077] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5080] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5080] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5081] mkdir("./1", 0777 [pid 5080] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5081] <... mkdir resumed>) = 0 [pid 5080] <... openat resumed>) = 4 [pid 5080] newfstatat(4, "", [pid 5081] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5080] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5080] getdents64(4, 0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5080] getdents64(4, 0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5080] close(4) = 0 [pid 5080] rmdir("./0/file0" [pid 5081] <... openat resumed>) = 3 [pid 5081] ioctl(3, LOOP_CLR_FD [pid 5080] <... rmdir resumed>) = 0 [pid 5080] getdents64(3, [pid 5077] <... umount2 resumed>) = 0 [pid 5080] <... getdents64 resumed>0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5077] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5080] close(3) = 0 [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5080] rmdir("./0" [pid 5077] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5080] <... rmdir resumed>) = 0 [pid 5077] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5080] mkdir("./1", 0777 [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5080] <... mkdir resumed>) = 0 [pid 5077] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5077] newfstatat(4, "", [pid 5080] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5080] <... openat resumed>) = 3 [pid 5077] getdents64(4, [pid 5080] ioctl(3, LOOP_CLR_FD [pid 5077] <... getdents64 resumed>0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5080] <... ioctl resumed>) = 0 [pid 5077] getdents64(4, [pid 5080] close(3 [pid 5077] <... getdents64 resumed>0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5080] <... close resumed>) = 0 [pid 5077] close(4 [pid 5080] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] <... close resumed>) = 0 [pid 5077] rmdir("./0/file0"./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x55558c887660, 24 [pid 5080] <... clone resumed>, child_tidptr=0x55558c887650) = 5090 [pid 5077] <... rmdir resumed>) = 0 [pid 5090] <... set_robust_list resumed>) = 0 [pid 5077] getdents64(3, [pid 5090] chdir("./1" [pid 5077] <... getdents64 resumed>0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5077] close(3) = 0 [pid 5090] <... chdir resumed>) = 0 [pid 5077] rmdir("./0" [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5077] <... rmdir resumed>) = 0 [pid 5090] setpgid(0, 0 [pid 5077] mkdir("./1", 0777) = 0 [pid 5090] <... setpgid resumed>) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5077] <... openat resumed>) = 3 [pid 5090] <... openat resumed>) = 3 [pid 5077] ioctl(3, LOOP_CLR_FD [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5090] memfd_create("syzkaller", 0) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5078] <... ioctl resumed>) = 0 [pid 5079] <... ioctl resumed>) = 0 [pid 5078] close(3) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5079] close(3) = 0 [pid 5079] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] <... clone resumed>, child_tidptr=0x55558c887650) = 5093 ./strace-static-x86_64: Process 5093 attached [pid 5093] set_robust_list(0x55558c887660, 24) = 0 [pid 5079] <... clone resumed>, child_tidptr=0x55558c887650) = 5092 [pid 5093] chdir("./1") = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5093] setpgid(0, 0) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5092 attached [pid 5092] set_robust_list(0x55558c887660, 24) = 0 [pid 5093] <... openat resumed>) = 3 [pid 5092] chdir("./1") = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5092] write(3, "1000", 4 [pid 5093] write(3, "1000", 4 [pid 5092] <... write resumed>) = 4 [pid 5092] close(3) = 0 [pid 5092] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5092] memfd_create("syzkaller", 0) = 3 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5093] <... write resumed>) = 4 [pid 5093] close(3 [pid 5092] <... mmap resumed>) = 0x7f4880c00000 [pid 5093] <... close resumed>) = 0 [pid 5093] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5081] <... ioctl resumed>) = 0 [pid 5081] close(3) = 0 [pid 5081] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5093] memfd_create("syzkaller", 0) = 3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5081] <... clone resumed>, child_tidptr=0x55558c887650) = 5094 ./strace-static-x86_64: Process 5094 attached [pid 5094] set_robust_list(0x55558c887660, 24) = 0 [pid 5094] chdir("./1") = 0 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5094] setpgid(0, 0) = 0 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1000", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5094] memfd_create("syzkaller", 0) = 3 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5077] <... ioctl resumed>) = 0 [pid 5077] close(3) = 0 [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558c887650) = 5095 ./strace-static-x86_64: Process 5095 attached [pid 5095] set_robust_list(0x55558c887660, 24) = 0 [pid 5095] chdir("./1") = 0 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5095] setpgid(0, 0) = 0 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5095] write(3, "1000", 4) = 4 [pid 5095] close(3) = 0 [pid 5095] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5095] memfd_create("syzkaller", 0) = 3 [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5090] <... write resumed>) = 16777216 [pid 5090] munmap(0x7f4880c00000, 138412032) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5090] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5090] close(3) = 0 [pid 5090] close(4) = 0 [pid 5090] mkdir("./file0", 0777) = 0 [pid 5090] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [ 102.189378][ T5090] loop3: detected capacity change from 0 to 32768 [pid 5090] chdir("./file0") = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5090] exit_group(0) = ? [pid 5090] +++ exited with 0 +++ [pid 5080] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=31 /* 0.31 s */} --- [pid 5080] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5080] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5080] getdents64(3, 0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5080] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5080] unlink("./1/binderfs") = 0 [pid 5080] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5080] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5080] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5080] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5080] getdents64(4, 0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5080] getdents64(4, 0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5080] close(4) = 0 [pid 5080] rmdir("./1/file0") = 0 [pid 5080] getdents64(3, 0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5080] close(3) = 0 [pid 5080] rmdir("./1") = 0 [pid 5080] mkdir("./2", 0777) = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5080] ioctl(3, LOOP_CLR_FD) = 0 [pid 5080] close(3) = 0 [pid 5080] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558c887650) = 5096 ./strace-static-x86_64: Process 5096 attached [pid 5096] set_robust_list(0x55558c887660, 24) = 0 [pid 5096] chdir("./2") = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0) = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5096] write(3, "1000", 4) = 4 [pid 5096] close(3) = 0 [pid 5096] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5096] memfd_create("syzkaller", 0) = 3 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5093] <... write resumed>) = 16777216 [pid 5093] munmap(0x7f4880c00000, 138412032 [pid 5092] <... write resumed>) = 16777216 [pid 5093] <... munmap resumed>) = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5092] munmap(0x7f4880c00000, 138412032 [pid 5093] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5093] close(3) = 0 [pid 5093] close(4) = 0 [pid 5093] mkdir("./file0", 0777) = 0 [pid 5093] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5095] <... write resumed>) = 16777216 [ 102.727708][ T5093] loop1: detected capacity change from 0 to 32768 [pid 5095] munmap(0x7f4880c00000, 138412032 [pid 5093] <... mount resumed>) = 0 [pid 5092] <... munmap resumed>) = 0 [pid 5094] <... write resumed>) = 16777216 [pid 5092] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5093] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5094] munmap(0x7f4880c00000, 138412032 [pid 5092] <... openat resumed>) = 4 [pid 5092] ioctl(4, LOOP_SET_FD, 3 [pid 5093] <... openat resumed>) = 3 [pid 5093] chdir("./file0") = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5095] <... munmap resumed>) = 0 [pid 5093] exit_group(0 [pid 5095] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5093] <... exit_group resumed>) = ? [pid 5093] +++ exited with 0 +++ [pid 5095] <... openat resumed>) = 4 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=40 /* 0.40 s */} --- [pid 5078] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5095] ioctl(4, LOOP_SET_FD, 3 [pid 5078] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5078] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] getdents64(3, [pid 5092] <... ioctl resumed>) = 0 [pid 5078] <... getdents64 resumed>0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5092] close(3 [pid 5078] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5092] <... close resumed>) = 0 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5092] close(4 [pid 5078] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5092] <... close resumed>) = 0 [pid 5078] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5095] <... ioctl resumed>) = 0 [pid 5092] mkdir("./file0", 0777 [pid 5078] unlink("./1/binderfs" [pid 5095] close(3 [pid 5092] <... mkdir resumed>) = 0 [pid 5095] <... close resumed>) = 0 [pid 5095] close(4) = 0 [pid 5078] <... unlink resumed>) = 0 [pid 5095] mkdir("./file0", 0777 [pid 5078] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5092] mount("/dev/loop2", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5095] <... mkdir resumed>) = 0 [pid 5095] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5092] <... mount resumed>) = 0 [pid 5092] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5092] chdir("./file0") = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5092] exit_group(0) = ? [pid 5094] <... munmap resumed>) = 0 [ 102.825124][ T5092] loop2: detected capacity change from 0 to 32768 [ 102.844510][ T5095] loop0: detected capacity change from 0 to 32768 [pid 5092] +++ exited with 0 +++ [pid 5078] <... umount2 resumed>) = 0 [pid 5079] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=11 /* 0.11 s */, si_stime=38 /* 0.38 s */} --- [pid 5078] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5079] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5078] newfstatat(AT_FDCWD, "./1/file0", [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5079] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5078] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5079] <... openat resumed>) = 3 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5079] newfstatat(3, "", [pid 5078] <... openat resumed>) = 4 [pid 5079] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] newfstatat(4, "", [pid 5095] <... mount resumed>) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5079] getdents64(3, [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5095] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5094] <... openat resumed>) = 4 [pid 5079] <... getdents64 resumed>0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5078] getdents64(4, [pid 5095] <... openat resumed>) = 3 [pid 5079] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5078] <... getdents64 resumed>0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5095] chdir("./file0" [pid 5094] ioctl(4, LOOP_SET_FD, 3 [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] getdents64(4, [pid 5095] <... chdir resumed>) = 0 [pid 5078] <... getdents64 resumed>0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5078] close(4 [pid 5095] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5078] <... close resumed>) = 0 [pid 5078] rmdir("./1/file0" [pid 5079] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5078] <... rmdir resumed>) = 0 [pid 5095] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5079] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5095] exit_group(0 [pid 5079] unlink("./1/binderfs" [pid 5078] getdents64(3, [pid 5095] <... exit_group resumed>) = ? [pid 5079] <... unlink resumed>) = 0 [pid 5078] <... getdents64 resumed>0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5079] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5078] close(3) = 0 [pid 5078] rmdir("./1") = 0 [pid 5079] <... umount2 resumed>) = 0 [pid 5078] mkdir("./2", 0777 [pid 5079] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5095] +++ exited with 0 +++ [pid 5079] newfstatat(AT_FDCWD, "./1/file0", [pid 5078] <... mkdir resumed>) = 0 [pid 5079] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5079] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=42 /* 0.42 s */} --- [pid 5094] <... ioctl resumed>) = 0 [pid 5079] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5078] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5077] restart_syscall(<... resuming interrupted clone ...> [pid 5094] close(3 [pid 5079] <... openat resumed>) = 4 [pid 5077] <... restart_syscall resumed>) = 0 [pid 5094] <... close resumed>) = 0 [pid 5079] newfstatat(4, "", [pid 5078] <... openat resumed>) = 3 [pid 5094] close(4 [pid 5079] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5094] <... close resumed>) = 0 [pid 5079] getdents64(4, [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5079] <... getdents64 resumed>0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5077] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5094] mkdir("./file0", 0777 [pid 5079] getdents64(4, [pid 5078] <... ioctl resumed>) = 0 [pid 5094] <... mkdir resumed>) = 0 [pid 5079] <... getdents64 resumed>0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5079] close(4 [pid 5077] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5079] <... close resumed>) = 0 [pid 5078] close(3 [pid 5079] rmdir("./1/file0" [pid 5078] <... close resumed>) = 0 [pid 5077] <... openat resumed>) = 3 [pid 5079] <... rmdir resumed>) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] newfstatat(3, "", [pid 5094] mount("/dev/loop4", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5079] getdents64(3, 0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5077] getdents64(3, [pid 5079] close(3) = 0 [pid 5077] <... getdents64 resumed>0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5079] rmdir("./1" [pid 5077] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5079] <... rmdir resumed>) = 0 [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 102.931242][ T5094] loop4: detected capacity change from 0 to 32768 [pid 5077] newfstatat(AT_FDCWD, "./1/binderfs", ./strace-static-x86_64: Process 5097 attached [pid 5094] <... mount resumed>) = 0 [pid 5077] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5097] set_robust_list(0x55558c887660, 24 [pid 5094] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5079] mkdir("./2", 0777 [pid 5078] <... clone resumed>, child_tidptr=0x55558c887650) = 5097 [pid 5077] unlink("./1/binderfs" [pid 5097] <... set_robust_list resumed>) = 0 [pid 5094] <... openat resumed>) = 3 [pid 5097] chdir("./2" [pid 5094] chdir("./file0" [pid 5079] <... mkdir resumed>) = 0 [pid 5077] <... unlink resumed>) = 0 [pid 5077] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5097] <... chdir resumed>) = 0 [pid 5094] <... chdir resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5094] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5079] <... openat resumed>) = 3 [pid 5077] <... umount2 resumed>) = 0 [pid 5097] <... prctl resumed>) = 0 [pid 5094] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5079] ioctl(3, LOOP_CLR_FD [pid 5097] setpgid(0, 0 [pid 5094] exit_group(0 [pid 5097] <... setpgid resumed>) = 0 [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5094] <... exit_group resumed>) = ? [pid 5094] +++ exited with 0 +++ [pid 5081] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=13 /* 0.13 s */, si_stime=41 /* 0.41 s */} --- [pid 5097] <... openat resumed>) = 3 [pid 5097] write(3, "1000", 4 [pid 5077] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5097] <... write resumed>) = 4 [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] newfstatat(AT_FDCWD, "./1/file0", [pid 5097] close(3 [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5097] <... close resumed>) = 0 [pid 5097] symlink("/dev/binderfs", "./binderfs" [pid 5081] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5077] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5081] <... openat resumed>) = 3 [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] newfstatat(3, "", [pid 5077] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5097] <... symlink resumed>) = 0 [pid 5077] <... openat resumed>) = 4 [pid 5077] newfstatat(4, "", [pid 5097] memfd_create("syzkaller", 0 [pid 5081] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5081] getdents64(3, [pid 5077] getdents64(4, [pid 5097] <... memfd_create resumed>) = 3 [pid 5081] <... getdents64 resumed>0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5077] <... getdents64 resumed>0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5077] getdents64(4, 0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5077] close(4 [pid 5081] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] <... close resumed>) = 0 [pid 5096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5077] rmdir("./1/file0" [pid 5081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] <... rmdir resumed>) = 0 [pid 5081] unlink("./1/binderfs" [pid 5077] getdents64(3, [pid 5081] <... unlink resumed>) = 0 [pid 5077] <... getdents64 resumed>0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5077] close(3 [pid 5081] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] <... close resumed>) = 0 [pid 5077] rmdir("./1") = 0 [pid 5077] mkdir("./2", 0777) = 0 [ 103.083173][ T5088] I/O error, dev loop2, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5081] <... umount2 resumed>) = 0 [pid 5077] ioctl(3, LOOP_CLR_FD [pid 5081] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] <... ioctl resumed>) = 0 [pid 5081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] close(3 [pid 5081] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] <... close resumed>) = 0 [pid 5081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5081] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5077] <... clone resumed>, child_tidptr=0x55558c887650) = 5098 [pid 5081] newfstatat(4, "", ./strace-static-x86_64: Process 5098 attached {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5098] set_robust_list(0x55558c887660, 24 [pid 5081] getdents64(4, [pid 5098] <... set_robust_list resumed>) = 0 [pid 5081] <... getdents64 resumed>0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5081] getdents64(4, [pid 5098] chdir("./2" [pid 5081] <... getdents64 resumed>0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5081] close(4 [pid 5098] <... chdir resumed>) = 0 [pid 5081] <... close resumed>) = 0 [pid 5081] rmdir("./1/file0") = 0 [pid 5081] getdents64(3, [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5081] <... getdents64 resumed>0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5098] <... prctl resumed>) = 0 [pid 5081] close(3 [pid 5098] setpgid(0, 0 [pid 5081] <... close resumed>) = 0 [pid 5081] rmdir("./1" [pid 5098] <... setpgid resumed>) = 0 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5081] <... rmdir resumed>) = 0 [pid 5081] mkdir("./2", 0777 [pid 5098] <... openat resumed>) = 3 [pid 5081] <... mkdir resumed>) = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5098] write(3, "1000", 4) = 4 [pid 5098] close(3) = 0 [pid 5098] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5081] <... openat resumed>) = 3 [pid 5081] ioctl(3, LOOP_CLR_FD [pid 5098] memfd_create("syzkaller", 0) = 3 [pid 5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5097] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5079] <... ioctl resumed>) = 0 [pid 5079] close(3) = 0 [pid 5079] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558c887650) = 5099 ./strace-static-x86_64: Process 5099 attached [pid 5099] set_robust_list(0x55558c887660, 24) = 0 [pid 5099] chdir("./2") = 0 [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5099] setpgid(0, 0) = 0 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5099] write(3, "1000", 4) = 4 [pid 5099] close(3) = 0 [pid 5099] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5099] memfd_create("syzkaller", 0) = 3 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5081] <... ioctl resumed>) = 0 [pid 5098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5081] close(3) = 0 [pid 5081] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558c887650) = 5100 ./strace-static-x86_64: Process 5100 attached [pid 5100] set_robust_list(0x55558c887660, 24) = 0 [pid 5100] chdir("./2") = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5100] setpgid(0, 0) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5100] write(3, "1000", 4) = 4 [pid 5100] close(3) = 0 [pid 5100] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5100] memfd_create("syzkaller", 0) = 3 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5096] <... write resumed>) = 16777216 [pid 5096] munmap(0x7f4880c00000, 138412032) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5096] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5096] close(3) = 0 [pid 5096] close(4) = 0 [ 104.262649][ T5096] loop3: detected capacity change from 0 to 32768 [pid 5096] mkdir("./file0", 0777) = 0 [pid 5099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5096] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [pid 5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] chdir("./file0") = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5096] exit_group(0) = ? [pid 5096] +++ exited with 0 +++ [pid 5080] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=33 /* 0.33 s */} --- [pid 5080] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5080] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5080] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5080] getdents64(3, 0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5080] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5080] unlink("./2/binderfs") = 0 [pid 5080] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5080] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5080] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5080] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5080] getdents64(4, 0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5080] getdents64(4, 0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5080] close(4) = 0 [pid 5080] rmdir("./2/file0") = 0 [pid 5080] getdents64(3, 0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5080] close(3) = 0 [pid 5080] rmdir("./2") = 0 [pid 5080] mkdir("./3", 0777) = 0 [pid 5097] <... write resumed>) = 16777216 [pid 5097] munmap(0x7f4880c00000, 138412032 [pid 5080] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5080] ioctl(3, LOOP_CLR_FD [pid 5100] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5097] <... munmap resumed>) = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5097] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5097] close(3) = 0 [pid 5097] close(4) = 0 [ 104.646429][ T5097] loop1: detected capacity change from 0 to 32768 [pid 5097] mkdir("./file0", 0777) = 0 [pid 5097] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [pid 5097] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5097] chdir("./file0") = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5097] exit_group(0) = ? [pid 5097] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=38 /* 0.38 s */} --- [pid 5078] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5078] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] getdents64(3, 0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5078] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] unlink("./2/binderfs") = 0 [pid 5078] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5098] <... write resumed>) = 16777216 [pid 5098] munmap(0x7f4880c00000, 138412032 [pid 5078] <... umount2 resumed>) = 0 [pid 5078] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5078] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] getdents64(4, 0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5078] getdents64(4, 0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5078] close(4) = 0 [pid 5078] rmdir("./2/file0") = 0 [pid 5078] getdents64(3, 0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5078] close(3) = 0 [pid 5078] rmdir("./2") = 0 [pid 5078] mkdir("./3", 0777) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD) = 0 [pid 5078] close(3) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5098] <... munmap resumed>) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x55558c887650) = 5101 ./strace-static-x86_64: Process 5101 attached [pid 5101] set_robust_list(0x55558c887660, 24) = 0 [pid 5101] chdir("./3") = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5101] setpgid(0, 0 [pid 5098] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5101] <... setpgid resumed>) = 0 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5098] <... openat resumed>) = 4 [pid 5098] ioctl(4, LOOP_SET_FD, 3 [pid 5101] <... openat resumed>) = 3 [pid 5101] write(3, "1000", 4) = 4 [pid 5101] close(3) = 0 [pid 5101] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5101] memfd_create("syzkaller", 0) = 3 [pid 5098] <... ioctl resumed>) = 0 [pid 5098] close(3 [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4880c00000 [pid 5098] <... close resumed>) = 0 [pid 5098] close(4) = 0 [pid 5098] mkdir("./file0", 0777) = 0 [ 104.890844][ T5098] loop0: detected capacity change from 0 to 32768 [pid 5098] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [pid 5098] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5098] chdir("./file0") = 0 [pid 5098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5098] exit_group(0) = ? [pid 5098] +++ exited with 0 +++ [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=37 /* 0.37 s */} --- [pid 5077] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5077] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] getdents64(3, 0x55558c8886f0 /* 4 entries */, 32768) = 112 [pid 5077] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] unlink("./2/binderfs") = 0 [pid 5077] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5077] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5077] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] getdents64(4, 0x55558c890730 /* 2 entries */, 32768) = 48 [pid 5077] getdents64(4, 0x55558c890730 /* 0 entries */, 32768) = 0 [pid 5077] close(4) = 0 [pid 5077] rmdir("./2/file0") = 0 [pid 5077] getdents64(3, 0x55558c8886f0 /* 0 entries */, 32768) = 0 [pid 5077] close(3) = 0 [pid 5077] rmdir("./2") = 0 [pid 5077] mkdir("./3", 0777) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5077] ioctl(3, LOOP_CLR_FD) = 0 [pid 5077] close(3) = 0 [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558c887650) = 5102 ./strace-static-x86_64: Process 5102 attached [pid 5102] set_robust_list(0x55558c887660, 24) = 0 [pid 5102] chdir("./3" [pid 5080] <... ioctl resumed>) = 0 [pid 5102] <... chdir resumed>) = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5099] <... write resumed>) = 16777216 [pid 5102] symlink("/dev/binderfs", "./binderfs" [pid 5099] munmap(0x7f4880c00000, 138412032 [pid 5080] close(3 [pid 5102] <... symlink resumed>) = 0 [pid 5080] <... close resumed>) = 0 [pid 5080] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5102] memfd_create("syzkaller", 0 [pid 5080] <... clone resumed>, child_tidptr=0x55558c887650) = 5103 ./strace-static-x86_64: Process 5103 attached [pid 5103] set_robust_list(0x55558c887660, 24 [pid 5102] <... memfd_create resumed>) = 3 [pid 5103] <... set_robust_list resumed>) = 0 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5103] chdir("./3" [pid 5102] <... mmap resumed>) = 0x7f4880c00000 [pid 5099] <... munmap resumed>) = 0 [pid 5103] <... chdir resumed>) = 0 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5103] setpgid(0, 0 [pid 5099] ioctl(4, LOOP_SET_FD, 3 [pid 5103] <... setpgid resumed>) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5099] <... ioctl resumed>) = 0 [pid 5103] write(3, "1000", 4) = 4 [pid 5103] close(3 [pid 5099] close(3 [pid 5103] <... close resumed>) = 0 [pid 5103] symlink("/dev/binderfs", "./binderfs"